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Article Dans Une Revue Journal of Magnetic Resonance Année : 2005

HMBC-like experiment based on longitudinal csa/dipolar cross-correlation

Résumé

A gradient-based sequence is proposed for efficiently filtering out all quantities except the longitudinal two-spin order, created by csa/dipolar cross-correlation rates. The dipolar interaction is between a proton and a heteronucleus, the csa being generally the one of the heteronucleus. Proton detection is carried out to benefit from maximum sensitivity. The resulting two-dimensional spectrum has the same aspect as an HMBC spectrum, implying the existence of a J coupling between the two considered nuclei, but here cross-peaks indicate the strength of the relevant csa/dipolar cross-correlation rate. The method is especially interesting in the case of medium-sized molecules where a given heteronucleus is subjected to several csa/dipolar cross-correlation effects, along with the corresponding J couplings.
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Dates et versions

hal-00125370 , version 1 (08-03-2017)

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Citer

Sabine Bouguet-Bonnet, Sebastien Leclerc, Pierre Mutzenhardt, Daniel Canet. HMBC-like experiment based on longitudinal csa/dipolar cross-correlation. Journal of Magnetic Resonance, 2005, 173 (1), pp.29-33. ⟨10.1016/j.jmr.2004.11.012⟩. ⟨hal-00125370⟩

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